Today, Microsoft has made available patches to secure your system from SandWorm vulnerability (named after the sci-fi novel) among other potential security risks. SandWorm might take a while to compromise your system since its reach is broad enough to effect Vista SP2 to Windows 8.1 and because its targets are usually large organizations, but that doesn’t mean you should dawdle while your system is vulnerable. While there are worse bugs out there, there is no reason that you shouldn’t get the patch and outright eliminate the threat.
Read more about SandWorm, the patch, and other current bugs to look out for here.